Recjprocatory gold-separator



PATENTED FEB. 23, 1904.

J. 1 SOHMITZ. RECIP-ROGATORY GOLD SEPABATOR.

APPLIOATIONIILED JAN. 28. 1903.

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UNITED STATES Patented February 23, 1904.

PATENT OFFICE.

REClPROCATORY GOLD-SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 752,926, dated February23, 1904. Application filed January 28, 1903. Serial No. 140,906. (N0111011810 To all whom it may concern:

Be it known that I, J OHN P. SoHMrrz, a citizen of the United States,residing in the city and county of San Francisco, State of California,have invented an Improvement in Reciprocatory Gold-Separators; and Ihereby declare the following to be a full, clear, and exact descriptionof the same.

My invention relates to an apparatus which is designed for theseparation of gold or other heavy material from lighter sand or ganguewithwhich it may be associated.

It consists, essentially, of semicircular segments formed in sectionsand secured together to any desired length, said segments havingcorrespondingly shaped transverse internal riflies and means forsupplying material to be treated and water thereto. An inclined surfaceis provided upon which the apparatus rests upon its semicircular base,means by which it may be oscillated from side to side, means forpreventing it from moving down the incline while at work, and stopsagainst which the apparatus is caused to alternately strike to give anabrupt shaking jar or motion at the end of each oscillation.

My invention also comprises details of construction which will be morefully explained by reference to the accompanying drawings, in whichFigure 1 is a section through my separator. Fig. 2 is an end view ofsame.

It is the object of the present apparatus to provide an easily-movablerocking or oscillating trough having a circular segmental form andinterior dams or riifles over which the pulp and water constantly flowduring its transverse agitation and in conjunction with this of stops orabutments against which the oscillations in each direction are abruptlychecked, whereby a tossing motion is given to the material as it passesthrough.

I have shown my apparatus as constructed of iron in the form of shortcylindrical segments A, having exterior flanges at each end, as shown at2, so that any number of these sections may be bolted together with anintermediate packing to make tight joints. These externally-projectingflanges also serve to support the apparatus upon any suitable bed uponwhich it is placed, and upon these circular flanges the apparatus may berocked from side to side. The bed 3 is a floor of sufficient strengthand slightly inclined from the receiving toward the discharge end.

4: represents upwardly-projecting blocks against which one or more ofthe rocking flanges contact, so as to prevent the apparatus fromgradually moving down the incline, these stops keeping it in its properposition while it is oscillated.

Any suitable means may be applied for oscillating the apparatus fromside to side, as

' an arm or arms extending across the top or outwardly from one side, asat 5, and this arm having sufficient leverage to operate the device isconnected by a rod or pitman 6 with a crank or crank-disk, as at 7. Thismay be revolved by any suitable motor. If water is available insuflicient quantity, a small water-wheel will serve or an electrical orother form of motor whereby the device is constantly oscillated fromside to side.

W ithin the semicircular trough formed of the united sections and at thelower end of each section is an internally-projecting lip or flange 9,which is also semicircular, and its interior edge is approximatelyconcentric with the inner periphery of the section. Each section may beprovided with one of these internal flanges, which extends up along thesides sufliciently-far to prevent the pulp from passing beyond the endsduring the oscillations of the apparatus, so that all the pulp will beacted upon, first, by the oscillations from side to side to cause it toalternately move up one side and the other, and by reason of theinclination the flow will cause the lighter portions to be graduallycarried over the internal flanges, thus leaving all the heavier materialto be deposited behind these flanges, from which it may afterward berecovered by any well-known or suitable method. In order to moreperfectly settle and separate the material, I have shown lugs, as at 10,fixed upon each side of the oscillatory segments and. in line beneath.Projecting upwardly fromthe, platform are standards or posts 11 soplaced that at the termination of the oscillation in each direction thelugs will strike upon the posts and abruptly check the oscillation. Thisoscillation having already started the pulp to move toward the side towhich the device is being tilted the abrupt checking of the oscillationwill cause it to move forward the remainder of the distance with asudden jump, and this has the eflect of more rapidly and more perfectlyseparating the heavier material from the light, allowing the former tosettle to the bottom and eventually to be caught behind the internalflanges, as before described.

It will be understood that the upper or receiving end of the segmentalapparatus will be closed, so as to prevent any escape of material inthat direction.

Various devices may be employed to feed material to the apparatussuch asa chute discharging into the upper end, with a flexible connectionwhereby the pulp and water are directed into the oscillating trough ifthe oscillations are so great as to carry the sides beyond the verticalplane of the chute. I have here shown a suitable device consisting of achute or hopper 12, supported upon fixed standards 13. The lower ordischarge end has connected with it a flexible continuation 14, and thelower edges of this connection are in like manner secured to the sidesof the oscillating trough, so that as the latter tilts from side to sidethe lower end of the flexible conductor will move with it, and thusinsure the delivery of the pulp into the apparatus. Water may beintroduced as desired through a pipe 15.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

An improved gold or like separator comprising a flat smooth tableinclined in the direction of its length, and having stops or abutmentsalong its sides; an inclined trough of equal diameter throughout andconsisting of segmental sections abutting endwise, each of said sectionshaving a flange at one end which projects both above and below the bottom of the section and a flange at the opposite end which projects belowonly, each of said outwardly-extending flanges forming rockers for thesection; transversely-disposed stops on the table engaged by saidrockers to prevent end movement of the trough; packingstrips betweenabutting sections; means for oscillating the trough; and lugs on theouter sides of said trough and adapted to contact with said abutments atthe end only of each transverse oscillation of the trough.

In witness whereof I have hereunto set my hand.

JOHN P. SCHMITZ.

Witnesses:

S. H. NoURsE, JEssIE O. BRonIE.

